I have "drop" in boards for a lack of better term on my 85 Jeanneau. I'll try to take a pic this weekend. It is made of two boards, the lower has sliding pin locks that go into the side of the door opening, the upper overlaps and sits on top of the lower, which then fits up and under neath the sliding hatch. Then there is the typical key lock to hold the two boards in place.
The previous/original owner made some plastic smoke door panels that allow one to open and close said doors if the weather is bad.
Sounds to me like yours, but opposite in all manners to a degree, but what you may be looking for. If this sounds like something that will work, I'll take some pics.
As far as articles go, keep track take good pics, I've done a few on the Jeanneau owners forum, I am sure teh Catalina sites would like them, along with check with the folks at Good Old Boat. You might get $100 from them or there abouts.
She drives me boat,
I drives me dinghy!